Cod sursa(job #1566313)
| Utilizator | Data | 11 ianuarie 2016 23:07:19 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.52 kb |
#include<iostream>
#include <fstream>
using namespace std;
#define MOD 1999999973
ifstream in("lgput.in");
ofstream out("lgput.out");
long long lgp(long long x, long long n,long long mod)
{
if(n<0) return lgp(1/x,-n, mod);
else if(n==0) return 1;
else if(n==1) return x%mod;
else if(n%2==0) return lgp((x%mod)*(x%mod), n/2, mod);
else if(n%1==0) return (x%mod)*lgp((x%mod)*(x%mod), (n-1)/2, mod);
}
int main()
{
long long n, p;
in>>n>>p;
out<<lgp(n,p,MOD);
return 0;
}
